// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/base/idle/idle_query_x11.h"

#include <X11/extensions/scrnsaver.h>

#include "ui/gfx/x/x11_types.h"

namespace ui {

class IdleData {
public:
    IdleData()
    {
        int event_base;
        int error_base;
        if (XScreenSaverQueryExtension(gfx::GetXDisplay(), &event_base,
                &error_base)) {
            mit_info.reset(XScreenSaverAllocInfo());
        }
    }

    ~IdleData()
    {
    }

    gfx::XScopedPtr<XScreenSaverInfo> mit_info;
};

IdleQueryX11::IdleQueryX11()
    : idle_data_(new IdleData())
{
}

IdleQueryX11::~IdleQueryX11() { }

int IdleQueryX11::IdleTime()
{
    if (!idle_data_->mit_info)
        return 0;

    if (XScreenSaverQueryInfo(gfx::GetXDisplay(),
            RootWindow(gfx::GetXDisplay(), 0),
            idle_data_->mit_info.get())) {
        return (idle_data_->mit_info->idle) / 1000;
    } else {
        return 0;
    }
}

} // namespace ui
